Orbital variations in planktonic foraminifera assemblages from the Ionian Sea during the Middle Pleistocene Transition
The Middle Pleistocene Transition (1.2-0.7 Ma) is the most recent re-organization of the global climate system which includes variations in the frequency and amplitude of glacial/interglacial cycles, increased ice sheet volume, sea surface temperature cooling and a significant drop in the CO2 atmosp...
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Online Access: | https://archimer.ifremer.fr/doc/00181/29205/27581.pdf https://doi.org/10.1016/j.palaeo.2012.10.039 https://archimer.ifremer.fr/doc/00181/29205/ |
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ftarchimer:oai:archimer.ifremer.fr:29205 2023-05-15T16:41:04+02:00 Orbital variations in planktonic foraminifera assemblages from the Ionian Sea during the Middle Pleistocene Transition Incarbona, Alessandro Dinares-turell, Jaume Di Stefano, Enrico Ippolito, Giuseppe Pelosi, Nicola Sprovieri, Rodolfo 2013-01 application/pdf https://archimer.ifremer.fr/doc/00181/29205/27581.pdf https://doi.org/10.1016/j.palaeo.2012.10.039 https://archimer.ifremer.fr/doc/00181/29205/ eng eng Elsevier Science Bv https://archimer.ifremer.fr/doc/00181/29205/27581.pdf doi:10.1016/j.palaeo.2012.10.039 https://archimer.ifremer.fr/doc/00181/29205/ 2012 Elsevier B.V. All rights reserved info:eu-repo/semantics/openAccess restricted use Palaeogeography Palaeoclimatology Palaeoecology (0031-0182) (Elsevier Science Bv), 2013-01 , Vol. 369 , P. 303-312 Middle Pleistocene Transition Planktonic foraminifera Ionian Sea Orbital climate variability Neogloboquadrina pachyderma sinistral coiling text Publication info:eu-repo/semantics/article 2013 ftarchimer https://doi.org/10.1016/j.palaeo.2012.10.039 2021-09-23T20:24:10Z The Middle Pleistocene Transition (1.2-0.7 Ma) is the most recent re-organization of the global climate system which includes variations in the frequency and amplitude of glacial/interglacial cycles, increased ice sheet volume, sea surface temperature cooling and a significant drop in the CO2 atmospheric levels. Here we present high-resolution planktonic foraminifera data (mean sampling resolution of about 780 years) from core LC10 recovered in the Ionian Sea (eastern Mediterranean), between 1.2 and 0.9 Ma. Selected taxa, among them G. ruber, T. quinqueloba and G. bulloides, show significant periodicities that can be associated to orbital cycles, mainly precession and obliquity. The planktonic foraminifera based paleoclimatic curve exhibits a cooling linear trend that can be associated to similar phenomena observed in the North Atlantic. On the other hand, we refer to the influence of the North African Monsoon the occurrence of two peaks of the low-salinity tolerant species G. quadrilobatus that fall in coincidence of sapropel layers. Finally, we discuss the distribution pattern of N. pachyderma sinistral coiling, with peaks up to about 20% between MIS 30 and 28, and compare it to middle-late Quaternary records of the Sicily Channel and western Mediterranean. Article in Journal/Newspaper Ice Sheet Neogloboquadrina pachyderma North Atlantic Planktonic foraminifera Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Palaeogeography, Palaeoclimatology, Palaeoecology 369 303 312 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Middle Pleistocene Transition Planktonic foraminifera Ionian Sea Orbital climate variability Neogloboquadrina pachyderma sinistral coiling |
spellingShingle |
Middle Pleistocene Transition Planktonic foraminifera Ionian Sea Orbital climate variability Neogloboquadrina pachyderma sinistral coiling Incarbona, Alessandro Dinares-turell, Jaume Di Stefano, Enrico Ippolito, Giuseppe Pelosi, Nicola Sprovieri, Rodolfo Orbital variations in planktonic foraminifera assemblages from the Ionian Sea during the Middle Pleistocene Transition |
topic_facet |
Middle Pleistocene Transition Planktonic foraminifera Ionian Sea Orbital climate variability Neogloboquadrina pachyderma sinistral coiling |
description |
The Middle Pleistocene Transition (1.2-0.7 Ma) is the most recent re-organization of the global climate system which includes variations in the frequency and amplitude of glacial/interglacial cycles, increased ice sheet volume, sea surface temperature cooling and a significant drop in the CO2 atmospheric levels. Here we present high-resolution planktonic foraminifera data (mean sampling resolution of about 780 years) from core LC10 recovered in the Ionian Sea (eastern Mediterranean), between 1.2 and 0.9 Ma. Selected taxa, among them G. ruber, T. quinqueloba and G. bulloides, show significant periodicities that can be associated to orbital cycles, mainly precession and obliquity. The planktonic foraminifera based paleoclimatic curve exhibits a cooling linear trend that can be associated to similar phenomena observed in the North Atlantic. On the other hand, we refer to the influence of the North African Monsoon the occurrence of two peaks of the low-salinity tolerant species G. quadrilobatus that fall in coincidence of sapropel layers. Finally, we discuss the distribution pattern of N. pachyderma sinistral coiling, with peaks up to about 20% between MIS 30 and 28, and compare it to middle-late Quaternary records of the Sicily Channel and western Mediterranean. |
format |
Article in Journal/Newspaper |
author |
Incarbona, Alessandro Dinares-turell, Jaume Di Stefano, Enrico Ippolito, Giuseppe Pelosi, Nicola Sprovieri, Rodolfo |
author_facet |
Incarbona, Alessandro Dinares-turell, Jaume Di Stefano, Enrico Ippolito, Giuseppe Pelosi, Nicola Sprovieri, Rodolfo |
author_sort |
Incarbona, Alessandro |
title |
Orbital variations in planktonic foraminifera assemblages from the Ionian Sea during the Middle Pleistocene Transition |
title_short |
Orbital variations in planktonic foraminifera assemblages from the Ionian Sea during the Middle Pleistocene Transition |
title_full |
Orbital variations in planktonic foraminifera assemblages from the Ionian Sea during the Middle Pleistocene Transition |
title_fullStr |
Orbital variations in planktonic foraminifera assemblages from the Ionian Sea during the Middle Pleistocene Transition |
title_full_unstemmed |
Orbital variations in planktonic foraminifera assemblages from the Ionian Sea during the Middle Pleistocene Transition |
title_sort |
orbital variations in planktonic foraminifera assemblages from the ionian sea during the middle pleistocene transition |
publisher |
Elsevier Science Bv |
publishDate |
2013 |
url |
https://archimer.ifremer.fr/doc/00181/29205/27581.pdf https://doi.org/10.1016/j.palaeo.2012.10.039 https://archimer.ifremer.fr/doc/00181/29205/ |
genre |
Ice Sheet Neogloboquadrina pachyderma North Atlantic Planktonic foraminifera |
genre_facet |
Ice Sheet Neogloboquadrina pachyderma North Atlantic Planktonic foraminifera |
op_source |
Palaeogeography Palaeoclimatology Palaeoecology (0031-0182) (Elsevier Science Bv), 2013-01 , Vol. 369 , P. 303-312 |
op_relation |
https://archimer.ifremer.fr/doc/00181/29205/27581.pdf doi:10.1016/j.palaeo.2012.10.039 https://archimer.ifremer.fr/doc/00181/29205/ |
op_rights |
2012 Elsevier B.V. All rights reserved info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.palaeo.2012.10.039 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
369 |
container_start_page |
303 |
op_container_end_page |
312 |
_version_ |
1766031508281229312 |